Yoshio Iwai

J-GLOBAL         Last updated: Jan 6, 2020 at 22:37

Research Interests


Research Areas


Academic & Professional Experience

Apr 1997
Mar 2003
Graduate School of Engineering Science, Osaka University


Apr 1992
Mar 1997
Graduate School of Engineering Science, Osaka University
Apr 1988
Mar 1992
Dept. of Information and computer science, Faculty of Engineering Science, Osaka University

Awards & Honors

Nov 2007
Best Reviewer Awards, Committee on Asian Conference on Computer VIsion

Published Papers

Weighted Random Forest using Gaze Distributions Measured from Observers for Gender Classification
Sayaka Yamaguchi, Masashi Nishiyama, Yoshio Iwai
Proc. of 14th International Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications   5 273-280   Feb 2019   [Refereed]
Temporal and spatial analysis of local body sway movements for the identification of people
Takuya Kamitani, Hiroki Yoshimura, Masashi Nishiyama, Yoshio Iwai
IEICE Transactions on Information and Systems   E102-D(1) 165-174   Jan 2019   [Refereed]
Protecting Personal Information using Homomorphic Encryption for Person Re-identification
Kazunari Morita, Hiroki Yoshimura, Masashi Nishiyama, and Yoshio Iwai
Proceedings of IEEE 7th Global Conference on Consumer Electronics   135-136   Oct 2018   [Refereed]
GLABM: Gamma Corrected Layered Adaptive Background Model for Outdoor Scenes
Kosuke Sakamoto, Hiroki Yoshimura, Masashi Nishiyama, Yoshio Iwai
Proceedings of IEEE 7th Global Conference on Consumer Electronics   38-39   Oct 2018   [Refereed]
Extracting Discriminative Features using Task-oriented Gaze Maps Measured from Observers for Personal Attribute Classification
Masashi Nishiyama, Riku Matsumoto, Hiroki Yoshimura, Yoshio Iwai
Pattern Recognition Letters   112 241-248   Sep 2018   [Refereed]
上野高貴, 西山正志, 西山正志, 岩井儀雄, 岩井儀雄
精密工学会誌(Web)   84(12) 1041‐1049(J‐STAGE)   2018
宮内翼, 吉村宏紀, 西山正志, 岩井儀雄
電子情報通信学会論文誌 D(Web)   J100-D(3) 365‐375 (WEB ONLY)   Mar 2017   [Refereed]
中野翔太, 四元辰平, 四元辰平, 吉村宏紀, 西山正志, 岩井儀雄, 菅原一孔
電子情報通信学会論文誌 D(Web)   J100-D(1) 104‐114 (WEB ONLY)   Jan 2017   [Refereed]
Hori M, Tsuruda Y, Yoshimura H, Iwai Y
Frontiers in psychology   6 1219   Aug 2015   [Refereed]
北村謙典, 武村紀子, 岩井儀雄, 佐藤宏介
電気学会論文誌 C   134(2) 218-224 (J-STAGE)   Feb 2014   [Refereed]
原健太, 堀磨伊也, 武村紀子, 岩井儀雄, 佐藤宏介
電気学会論文誌 C   134(1) 102-111 (J-STAGE)   Jan 2014   [Refereed]
松本裕樹, 武村紀子, 中村泰, 岩井儀雄, 石黒浩
計測自動制御学会論文集   48(11) 740-744   Nov 2012
原健太, 武村紀子, 岩井儀雄, 佐藤宏介
電気学会論文誌 C   132(8) 1340-1346   Aug 2012
山本文香, 堀磨伊也, 岩井儀雄, 石黒浩
電子情報通信学会論文誌 D   J95-D(8) 1573-1584   Aug 2012
NAGAHARA Hajime, KANKI Yoshinori, IWAI Yoshio, YACHIDA Masahiko
IEEJ Transactions on Electronics, Information and Systems   130(9) 1561-1571   Sep 2010
A resolution of camera has been drastically improved under a current request for high-quality digital images. For example, digital still camera has several mega pixels. Although a video camera has the higher frame-rate, the resolution of a video c...
ONO Yuya, IWAI Yoshio, ISHIGURO Hiroshi
IEEJ Transactions on Electronics, Information and Systems   130(9) 1513-1523   Sep 2010
Recently, research fields of augmented reality and robot navigation are actively investigated. Estimating a relative posture between an object and a camera is an important task in these fields. In this paper, we propose a novel method for posture ...
IWAI Yoshio, NAGAHARA Hajime, YACHIDA Masahiko
IEEJ Transactions on Electronics, Information and Systems   130(4) 712-722   Apr 2010
An omnidirectional vision is an imaging system that can capture a surrounding image in whole direction by using a hyperbolic mirror and a conventional CCD camera. This paper proposes a streaming server that can efficiently transfer movies captured...
IWAI Yoshio, AOKI Yasuhiro, ISHIGURO Hiroshi
IEEJ Transactions on Electronics, Information and Systems   130(4) 546-556   Apr 2010
In this paper, we propose a generic framework for detecting suspicious actions with mixture distributions of action primitives, of which collection represents human actions. The framework is based on Bayesian approach and the calculation is perfor...
Yuzuko Utsumi, Yuta Matsumoto, Yoshio Iwai
Transactions of Information Processing Society of Japan   51(2) 217-228   Feb 2010
Researchers have proposed many face recognition methods with the aim of improving the accuracy rate of face recognition in several decades. Few face recognition methods, however, focus on computational cost. To reduce the computational cost of fac...
AOTAKE Takayuki, NAGAHARA Hajime, IWAI Yoshio, YACHIDA Masahiko
The IEICE transactions on information and systems (Japanese edetion)   92(8) 1186-1196   Aug 2009
青竹貴之, 長原一, 岩井儀雄, 谷内田正彦
電子情報通信学会論文誌 D   J92-D(8) 1186-1196   Aug 2009
岩井儀雄, 長原一, 渡邊清高, 谷内田正彦
情報処理学会論文誌トランザクション(CD-ROM)   2008(2) VOL.2NO.1,1-13   Apr 2009
Yoshio Iwai, Hajime Nagahara, Kiyotaka Watanabe, Masahiko Yachida
情報処理学会論文誌. コンピュータビジョンとイメージメディア   2(1) 1-13   Mar 2009
In recent years high quality video streaming is required in conjunction with broad-band network. We have proposed an interactive video streaming with 360-degree-view by using omnidirectional image sensor, but its resolution is not high and it prev...
Watanabe Kiyotaka, Iwai Yoshio, Haga Tetsuji, Yachida Masahiko
The journal of the Institute of Image Information and Television Engineers   62(11) 1768-1776   Nov 2008
In learning-based super-resolution algorithms, there are two major problems. One is that they require a large amount of memory to store examples; the other is the high computational cost of finding the nearest neighbors in the database. We have de...
UTSUMI Yuzuko, IWAI Yoshio, YACHIDA Masahiko
Journal of Japan Society for Fuzzy Theory and Intelligent Informatics   19(5) 476-487   Oct 2007
In recent years, many different image features have been used for face recognition. The Gabor wavelet feature is the most widely used image feature in face recognition systems because its recognition rate is superior to that of Eigenface systems. ...
Uetani Takumi, Iwai Yoshio, Nagahara Hajime, Yachida Masahiko
情報科学技術レターズ   6 451-454   Aug 2007
YOSHIMURA Hironori, IWAI Yoshio, YACHIDA Masahiko
The IEICE transactions on information and systems (Japanese edetion)   90(8) 1987-1997   Aug 2007
本論文では,屋外環境において照明変動に対してロバストかつ物体の影を除去した移動物体検出手法を提案する.この手法は明るさ可変背景モデルを用いて背景成分をカルマンフィルタにより連続して推定,更新を行うことで実現する.また移動物体の検出には,明るさ可変背景モデルを用いて色情報により識別を行う.更にMSC(Margined Sign Correlation:マージン付き符号相関)を利用して空間情報による識別も同時に行う.これにより更なる移動物体の検出精度の向上を図る.このシステムを実際に屋外におい...
吉村浩典, 岩井儀雄, 谷内田正彦
電子情報通信学会論文誌 D   J90-D(8) 1987-1997   Aug 2007
MATSUNOBU Toru, NAGAHARA Hajime, IWAI Yoshio, YACHIDA Masahiko, SUZUKI Toshiya
The IEICE transactions on information and systems (Japanese edetion)   90(4) 1073-1084   Apr 2007
松延徹, 長原一, 岩井儀雄, 谷内田正彦, 鈴木俊哉
電子情報通信学会論文誌 D   J90-D(4) 1073-1084   Apr 2007
情報処理学会論文誌. コンピュータビジョンとイメージメディア   48(1) 12-23   Feb 2007
In recent years, the social environment has become more complex and people's personal lives have become more varied, so the development of security systems that detect hazards and allow us to avoid these has become necessary for us to be safe and ...
情報処理学会論文誌. コンピュータビジョンとイメージメディア   47(10) 195-207   Jul 2006
This paper presents a novel algorithm to obtain a high spatio-temporal resolution video. To this end, we introduce a dual sensor camera that can capture two video sequences with the same field of view simultaneously. These sequences are high resol...
渡邊清高, 岩井儀雄, 長原一, 谷内田正彦, 鈴木俊哉
情報処理学会論文誌   47(SIG10(CVIM15)) 195-207   Jul 2006
ARAI Tatsuo, IWAI Yoshio, HIURA Shinsaku, INOUE Kenji
計測と制御 = Journal of the Society of Instrument and Control Engineers   44(3) 203-209   Mar 2005


西山正志, 岩井儀雄
画像ラボ   30(5) 8‐14   May 2019
西山正志, 岩井儀雄
画像ラボ   29(7) 52‐55   Jul 2018
IPSJ SIG Notes. CVIM   2006(51) 99-106   May 2006
Self-location is very informative for wearable systems. In this paper, we propose a method for identifying user's location from an omnidirectional image by azimuth-invariant features. Azimuth-invariant features are extracted from an omnidirectiona...
重本倫宏, 星川章, 長原一, 岩井儀雄, 谷内田正彦, 鈴木俊哉
情報処理学会論文誌   47(SIG5(CVIM13)) 35-44   Mar 2006
間下以大, 岩井儀雄, 谷内田正彦
情報処理学会論文誌   47(SIG5(CVIM13)) 45-58   Mar 2006

Conference Activities & Talks

山口紗也加, 吉村宏紀, 西山正志, 岩井儀雄
電気・情報関連学会中国支部連合大会講演論文集(CD-ROM)   15 Oct 2018   
山口優太, 神谷卓也, 吉村宏紀, 西山正志, 岩井儀雄
情報科学技術フォーラム講演論文集   12 Sep 2018   
神谷卓也, 安形俊輝, 吉村宏紀, 西山正志, 岩井儀雄
電子情報通信学会技術研究報告   19 Jul 2018   
電子情報通信学会技術研究報告   19 Jul 2018   
白岩史, 井上路子, 近藤貴大, 大栗聖由, 西山正志, 岩井儀雄
電気学会研究会資料   22 Feb 2018